EP 1634277 A1 20060315 - EXTRACTION OF TEST SIGNAL SECTIONS FOR MEASURING THE QUALITY OF AN AUDIO SIGNAL
Title (en)
EXTRACTION OF TEST SIGNAL SECTIONS FOR MEASURING THE QUALITY OF AN AUDIO SIGNAL
Title (de)
EXTRAHIERUNG VON TESTSIGNALABSCHNITTEN ZUR QUALITÄTSMESSUNG EINES AUDIOSIGNALS
Title (fr)
EXTRACTION DE SECTIONS DE SIGNAUX D'ESSAI POUR LA MESURE DE LA QUALITE D'UN SIGNAL AUDIO
Publication
Application
Priority
- EP 2004006487 W 20040616
- DE 10327239 A 20030617
Abstract (en)
[origin: WO2004112002A1] The aim of the invention is to extract test signal sections, conforming with auditory tests, from an audio signal especially for non-intrusive tests for evaluating the quality of a transmission system. To this end, a temporal structure of the audio signal is analysed (10) in order to differentiate an information-carrying section of the audio signal from a preceding non-information-carrying section of the audio signal or a subsequent non-information-carrying section of the audio signal. A test signal section based on the information-carrying section of the audio signal is then produced (12). In this way, test signal sections conforming with auditory tests are achieved, said sections establishing the comparability with other auditory tests and reducing a too imprecise evaluation of the transmission system on the basis of system-immanent artefacts.
IPC 1-7
IPC 8 full level
G10L 25/69 (2013.01); G10L 25/78 (2013.01); H04M 3/22 (2006.01)
CPC (source: EP US)
G10L 25/69 (2013.01 - EP US); G10L 25/78 (2013.01 - EP US); H04M 3/2236 (2013.01 - EP US); H04M 2203/056 (2013.01 - EP US)
Citation (search report)
See references of WO 2004112002A1
Designated contracting state (EPC)
AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HU IE IT LI LU MC NL PL PT RO SE SI SK TR
DOCDB simple family (publication)
WO 2004112002 A1 20041223; WO 2004112002 A8 20050210; DE 10327239 A1 20050127; DK 1634277 T3 20121008; EP 1634277 A1 20060315; EP 1634277 B1 20120704; ES 2389768 T3 20121031; PT 1634277 E 20121015; US 2006177003 A1 20060810; US 7680056 B2 20100316
DOCDB simple family (application)
EP 2004006487 W 20040616; DE 10327239 A 20030617; DK 04739953 T 20040616; EP 04739953 A 20040616; ES 04739953 T 20040616; PT 04739953 T 20040616; US 28631105 A 20051123